"nerve" in the noun sense
1. nerve, nervus
any bundle of nerve fibers running to various organs and tissues of the body
2. heart, mettle, nerve, spunk
the courage to carry on
"he kept fighting on pure spunk"
"you haven't got the heart for baseball"
3. boldness, nerve, brass, face, cheek
"I couldn't believe her boldness"
"he had the effrontery to question my honesty"
"nerve" in the verb sense
1. steel, nerve
get ready for something difficult or unpleasant
Source: WordNet® (An amazing lexical database of English)
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